Freezing and Drying Machine

1. Refrigeration system
①Mian computer: Examine general orchid with German BITZER or American half enclose refrigeration compressor.
②Oil separator: Choose Denmark (Danfoss) or American ALCO
③Expansion valve: Choose Denmark (Danfoss)
④Electromagnetism valve: Choose Denmark (Danfoss)
⑤Vapor liquid separator: Choose Taiwan SAV product (this product height presses liquid super~cooling installation)
⑥Refrigeration dose: Choose R22 or R404A
⑦Evaporator: Choose import board type heat exchanger
⑧Protective device: Difference in degree presses the overheat of oil pressure to protect voluntarily

2. Vacuum system
Vacuum system from unite pump directly to add Roots Pump, have raised taking out speed of the vacuum system greatly, which is helpful for the water trap to condense moisture in the sublimation process, shortening dry period.

3. The liquid system of heat conduction
①Circulating pump: Choose Danish shelf orchid to have wet rotor pump (performance is good, the length of service life and noise are low)
②The liquid of heat conduction: The type shell base silicone oil of low temperature (viscosity is little, may endure temperature is low)

4. Control system
①Touch-screen: 12 inches general colored display, Sharp Japan
②Temperature sensor: Sansan (with compensation) Pt100
③Vacuum degree sensor: Thermal couple canal